Ducati Diavel Workshop Manual page 180

Battery charging system
Refitting the battery
Position the battery drift (6) on the battery support (7).
Place the battery (3) in its compartment by connecting first cable (7) to the negative terminal with the screw (4).
Connect the positive cable (5) and then the ABS positive cable (6) to the positive terminal with the screw (4).
Tighten the terminal screws (4) to a torque of 10 Nm ± 10% (Sect. 3 - 3Frame torque settings) and apply grease around
the battery terminal clamps to prevent oxidation.